At Tue, 19 Oct 2021 02:44:03 -0700, Anders Kaseorg <ande...@mit.edu> wrote in > On 10/19/21 01:34, Kyotaro Horiguchi wrote: > > I tend to agree to this, but seeing ssh ignoring $HOME, I'm not sure > > it's safe that we follow the variable at least when accessing > > confidentiality(?) files. Since I don't understand the exact > > reasoning for the ssh's behavior so it's just my humbole opinion. > > According to https://bugzilla.mindrot.org/show_bug.cgi?id=3048#c1, it > used to be supported to install the ssh binary as setuid. A > setuid/setgid binary needs to treat all environment variables with > suspicion: if it can be convinced to write a file to $HOME with root > privileges, then a user who modifies $HOME before invoking the binary > could cause it to write to a file that the user normally couldn’t. > > There’s no such concern for a binary that isn’t setuid/setgid. Anyone > with the ability to modify $HOME can be assumed to already have full > control of the user account.
Thansk for the link. Still I'm not sure it's the fact but it sounds reasonable enough. If that's the case, I vote +1 for psql or other commands honoring $HOME. regards. -- Kyotaro Horiguchi NTT Open Source Software Center
